mirror of
https://github.com/denoland/deno.git
synced 2024-12-22 07:14:47 -05:00
295 lines
6.8 KiB
Rust
295 lines
6.8 KiB
Rust
// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
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#[cfg(not(unix))]
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use deno_core::error::generic_error;
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#[cfg(not(target_os = "windows"))]
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use deno_core::error::type_error;
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use deno_core::error::AnyError;
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use deno_core::op;
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use deno_core::Extension;
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#[cfg(unix)]
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use deno_core::OpState;
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#[cfg(unix)]
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use std::cell::RefCell;
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#[cfg(unix)]
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use std::rc::Rc;
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#[cfg(unix)]
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use deno_core::AsyncRefCell;
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#[cfg(unix)]
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use deno_core::CancelFuture;
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#[cfg(unix)]
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use deno_core::CancelHandle;
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#[cfg(unix)]
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use deno_core::RcRef;
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#[cfg(unix)]
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use deno_core::Resource;
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#[cfg(unix)]
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use deno_core::ResourceId;
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#[cfg(unix)]
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use std::borrow::Cow;
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#[cfg(unix)]
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use tokio::signal::unix::{signal, Signal, SignalKind};
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pub fn init() -> Extension {
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Extension::builder()
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.ops(vec![
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op_signal_bind::decl(),
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op_signal_unbind::decl(),
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op_signal_poll::decl(),
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])
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.build()
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}
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#[cfg(unix)]
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/// The resource for signal stream.
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/// The second element is the waker of polling future.
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struct SignalStreamResource {
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signal: AsyncRefCell<Signal>,
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cancel: CancelHandle,
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}
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#[cfg(unix)]
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impl Resource for SignalStreamResource {
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fn name(&self) -> Cow<str> {
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"signal".into()
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}
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fn close(self: Rc<Self>) {
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self.cancel.cancel();
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}
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}
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#[cfg(target_os = "freebsd")]
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pub fn signal_str_to_int(s: &str) -> Result<libc::c_int, AnyError> {
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match s {
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"SIGHUP" => Ok(1),
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"SIGINT" => Ok(2),
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"SIGQUIT" => Ok(3),
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"SIGILL" => Ok(4),
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"SIGTRAP" => Ok(5),
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"SIGABRT" => Ok(6),
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"SIGEMT" => Ok(7),
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"SIGFPE" => Ok(8),
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"SIGKILL" => Ok(9),
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"SIGBUS" => Ok(10),
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"SIGSEGV" => Ok(11),
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"SIGSYS" => Ok(12),
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"SIGPIPE" => Ok(13),
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"SIGALRM" => Ok(14),
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"SIGTERM" => Ok(15),
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"SIGURG" => Ok(16),
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"SIGSTOP" => Ok(17),
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"SIGTSTP" => Ok(18),
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"SIGCONT" => Ok(19),
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"SIGCHLD" => Ok(20),
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"SIGTTIN" => Ok(21),
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"SIGTTOU" => Ok(22),
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"SIGIO" => Ok(23),
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"SIGXCPU" => Ok(24),
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"SIGXFSZ" => Ok(25),
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"SIGVTALRM" => Ok(26),
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"SIGPROF" => Ok(27),
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"SIGWINCH" => Ok(28),
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"SIGINFO" => Ok(29),
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"SIGUSR1" => Ok(30),
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"SIGUSR2" => Ok(31),
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"SIGTHR" => Ok(32),
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"SIGLIBRT" => Ok(33),
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_ => Err(type_error(format!("Invalid signal : {}", s))),
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}
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}
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#[cfg(any(target_os = "android", target_os = "linux"))]
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pub fn signal_str_to_int(s: &str) -> Result<libc::c_int, AnyError> {
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match s {
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"SIGHUP" => Ok(1),
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"SIGINT" => Ok(2),
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"SIGQUIT" => Ok(3),
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"SIGILL" => Ok(4),
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"SIGTRAP" => Ok(5),
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"SIGABRT" => Ok(6),
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"SIGBUS" => Ok(7),
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"SIGFPE" => Ok(8),
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"SIGKILL" => Ok(9),
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"SIGUSR1" => Ok(10),
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"SIGSEGV" => Ok(11),
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"SIGUSR2" => Ok(12),
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"SIGPIPE" => Ok(13),
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"SIGALRM" => Ok(14),
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"SIGTERM" => Ok(15),
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"SIGSTKFLT" => Ok(16),
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"SIGCHLD" => Ok(17),
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"SIGCONT" => Ok(18),
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"SIGSTOP" => Ok(19),
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"SIGTSTP" => Ok(20),
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"SIGTTIN" => Ok(21),
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"SIGTTOU" => Ok(22),
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"SIGURG" => Ok(23),
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"SIGXCPU" => Ok(24),
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"SIGXFSZ" => Ok(25),
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"SIGVTALRM" => Ok(26),
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"SIGPROF" => Ok(27),
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"SIGWINCH" => Ok(28),
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"SIGIO" => Ok(29),
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"SIGPWR" => Ok(30),
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"SIGSYS" => Ok(31),
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_ => Err(type_error(format!("Invalid signal : {}", s))),
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}
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}
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#[cfg(target_os = "macos")]
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pub fn signal_str_to_int(s: &str) -> Result<libc::c_int, AnyError> {
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match s {
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"SIGHUP" => Ok(1),
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"SIGINT" => Ok(2),
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"SIGQUIT" => Ok(3),
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"SIGILL" => Ok(4),
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"SIGTRAP" => Ok(5),
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"SIGABRT" => Ok(6),
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"SIGEMT" => Ok(7),
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"SIGFPE" => Ok(8),
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"SIGKILL" => Ok(9),
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"SIGBUS" => Ok(10),
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"SIGSEGV" => Ok(11),
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"SIGSYS" => Ok(12),
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"SIGPIPE" => Ok(13),
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"SIGALRM" => Ok(14),
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"SIGTERM" => Ok(15),
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"SIGURG" => Ok(16),
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"SIGSTOP" => Ok(17),
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"SIGTSTP" => Ok(18),
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"SIGCONT" => Ok(19),
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"SIGCHLD" => Ok(20),
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"SIGTTIN" => Ok(21),
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"SIGTTOU" => Ok(22),
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"SIGIO" => Ok(23),
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"SIGXCPU" => Ok(24),
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"SIGXFSZ" => Ok(25),
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"SIGVTALRM" => Ok(26),
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"SIGPROF" => Ok(27),
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"SIGWINCH" => Ok(28),
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"SIGINFO" => Ok(29),
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"SIGUSR1" => Ok(30),
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"SIGUSR2" => Ok(31),
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_ => Err(type_error(format!("Invalid signal: {}", s))),
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}
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}
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#[cfg(any(target_os = "solaris", target_os = "illumos"))]
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pub fn signal_str_to_int(s: &str) -> Result<libc::c_int, AnyError> {
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match s {
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"SIGHUP" => Ok(1),
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"SIGINT" => Ok(2),
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"SIGQUIT" => Ok(3),
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"SIGILL" => Ok(4),
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"SIGTRAP" => Ok(5),
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"SIGIOT" => Ok(6),
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"SIGABRT" => Ok(6),
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"SIGEMT" => Ok(7),
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"SIGFPE" => Ok(8),
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"SIGKILL" => Ok(9),
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"SIGBUS" => Ok(10),
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"SIGSEGV" => Ok(11),
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"SIGSYS" => Ok(12),
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"SIGPIPE" => Ok(13),
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"SIGALRM" => Ok(14),
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"SIGTERM" => Ok(15),
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"SIGUSR1" => Ok(16),
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"SIGUSR2" => Ok(17),
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"SIGCLD" => Ok(18),
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"SIGCHLD" => Ok(18),
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"SIGPWR" => Ok(19),
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"SIGWINCH" => Ok(20),
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"SIGURG" => Ok(21),
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"SIGPOLL" => Ok(22),
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"SIGIO" => Ok(22),
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"SIGSTOP" => Ok(23),
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"SIGTSTP" => Ok(24),
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"SIGCONT" => Ok(25),
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"SIGTTIN" => Ok(26),
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"SIGTTOU" => Ok(27),
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"SIGVTALRM" => Ok(28),
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"SIGPROF" => Ok(29),
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"SIGXCPU" => Ok(30),
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"SIGXFSZ" => Ok(31),
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"SIGWAITING" => Ok(32),
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"SIGLWP" => Ok(33),
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"SIGFREEZE" => Ok(34),
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"SIGTHAW" => Ok(35),
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"SIGCANCEL" => Ok(36),
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"SIGLOST" => Ok(37),
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"SIGXRES" => Ok(38),
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"SIGJVM1" => Ok(39),
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"SIGJVM2" => Ok(40),
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_ => Err(type_error(format!("Invalid signal : {}", s))),
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}
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}
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#[cfg(unix)]
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#[op]
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fn op_signal_bind(
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state: &mut OpState,
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sig: String,
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) -> Result<ResourceId, AnyError> {
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let signo = signal_str_to_int(&sig)?;
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if signal_hook_registry::FORBIDDEN.contains(&signo) {
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return Err(type_error(format!(
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"Binding to signal '{}' is not allowed",
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sig
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)));
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}
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let resource = SignalStreamResource {
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signal: AsyncRefCell::new(signal(SignalKind::from_raw(signo))?),
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cancel: Default::default(),
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};
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let rid = state.resource_table.add(resource);
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Ok(rid)
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}
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#[cfg(unix)]
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#[op]
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async fn op_signal_poll(
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state: Rc<RefCell<OpState>>,
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rid: ResourceId,
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) -> Result<bool, AnyError> {
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let resource = state
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.borrow_mut()
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.resource_table
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.get::<SignalStreamResource>(rid)?;
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let cancel = RcRef::map(&resource, |r| &r.cancel);
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let mut signal = RcRef::map(&resource, |r| &r.signal).borrow_mut().await;
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match signal.recv().or_cancel(cancel).await {
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Ok(result) => Ok(result.is_none()),
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Err(_) => Ok(true),
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}
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}
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#[cfg(unix)]
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#[op]
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pub fn op_signal_unbind(
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state: &mut OpState,
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rid: ResourceId,
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) -> Result<(), AnyError> {
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state.resource_table.close(rid)?;
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Ok(())
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}
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#[cfg(not(unix))]
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#[op]
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pub fn op_signal_bind() -> Result<(), AnyError> {
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Err(generic_error("not implemented"))
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}
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#[cfg(not(unix))]
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#[op]
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fn op_signal_unbind() -> Result<(), AnyError> {
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Err(generic_error("not implemented"))
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}
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#[cfg(not(unix))]
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#[op]
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async fn op_signal_poll() -> Result<(), AnyError> {
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Err(generic_error("not implemented"))
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}
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